Calculate the mass fraction (w) of carbon in calcium carbide CaC2.

univerkov | December 21, 2020 | education

First, let’s find the molar mass of CaC2:
M (CaC2) = 40 + 12 * 2 = 40 + 24 = 64
Now you can calculate the mass fraction of calcium:
w (Ca) = 40/64 * 100% = 62.5%

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